zoning of worcester, downtown

this image is extracted from a larger zoning map of worcester

Since I was unable to receive an autoCAD file for Worcester until recently I did most of my studies and analyses from a parcel map that I had to piece together approximately 20 different pieces.  Assessor's Grid Index Map City of Worcester, MA, if this link does not work the title of the link can be typed into google and it should be available.  I've received autoCAD files from the GIS department in layers that I have to overlay.